This International Standard specifies a set of graphical symbols conventionally used for marking of distribution packages in their physical distribution chain to convey handling instructions. To make things easier, we've put together a downloadable vector file of the most common packaging symbols – perfect for engineers, sourcing teams, and designers who. These universal pictograms, properly placed on the boxes, serve as guidance for the perfect handling of the cargo, since they are not accompanied by written words and are understandable anywhere in the world. In addition, they are standardized according to ISO 780:1997. Look, every symbol serves a purpose and provides instructions on handling, storage, and shipping. mil website belongs to an official U.